25 4 Proceedings of the Royal Irish Academy. 



Family Bibionidae. 



*Scatopse tristis Ztt. — CI. : one (G.). 

 Anarete candidata Red. — M. : Knappagh, one 2 (G.). 

 Bibio johannis L. — M. : Louisburgh, one 3 . 

 *B. laeteipennis Ztt. — M. : Belclare, one 3 and three 2 (H.). : — This species 

 is closely allied to the preceding, but easily distinguished in the 3 sex 

 by its milky-white wings. 

 *Pbilia (Dilophus) femorata Mg.— M. : Achill X.E., one 2 (H.). 



Family Tendipedidae (Chironomidae). 



Tendipes ( Chironomus ) annularis Beg. — M. : Achill X.E., two 3 and one 2 

 (H.). 



*T. aprilinus Mg. — M. : Westport Demesne, two 3 (G-.); Lough neai' 

 Westport three 3 and one 2 (G.). 



*T. brevitibialis Ztt. — M. : Glendarary, two 2 (G.) : Westport, one 2 in garden 

 and two 3 in Demesne (G.) ; near "Westport, one 2 (G.) ; Castlebar 

 Lough, two 2 (G.). — A small delicate species, of the same group as T. 

 viridis Mcq., and characterized by its extremely short front tibiae. 



*T. dispar My. — M. : Knappagh, two 3 (G.) ; near Westport, one 3 and 

 two 2 (G.). 



*T. dorsalis Mg.— CI. : two 3 (H.). M. : Westport, one 2 in garden (G.).— 

 A variable but common species. The longitudinal stripes on the 

 thorax vary from light chestnut brown to black. The transversely 

 banded abdomen serves to distinguish it from its allies. Size : 

 6-75 mm. 



*T. ferrugineovittatus Ztt. — M. : a single 2 of what I take to be this species 

 was captured by me in the Westport Demesne on 28th July, 1911. It 

 is very similar to the common T. plumosus L. ; but the thoracic stripes 

 are reddish-brown, the metathorax is dark brown with a distinctly 

 yellow base, and the whole insect is smaller and more greenish in tinge. 



*T. nigrimanus Staeg. — M. : Westport, one 3 in garden (G). 



*T. nubeculosus Mg. — M. : Westport, twenty-six 3 and five 2 in the 

 Demesne, two 2 in garden, and one 2 on riverside (G.). 

 T. pedellus Beg. — M. : Westport and Louisburgh (H.) ; Belclare (H. and 

 (j. > ; Castlebar Lough and Knappagh (G.). 



*T. pictulus Mg.— II. : Belclare, two 2 (H.). 

 T. plumosus L.—M. : Louisburgh, one 3 (H.) ; Belclare and Westport, one 3 

 in garden (G.). 



